I honestly don’t know why anyone would need to buy commercial Photoshop brush packages these days. I needed some cloud brushes and didn’t want to take the time to make them. A simple Google search turned up not only several free cloud brush sets, but tons of free brush sites. And I often find digital artists and illustrators offering their brushes as free downloads. Below are some sites that’ll get you started if you’re looking to beef up your Photoshop brush collection.
Falln-Stock â€“ a really interesting deviantART gallery of object oriented PS brush sets
The Art of Daarken â€“ a fantasy/scifi artist gallery site with a nice set of custom paint brushes (click on tutorials >> custom brushes